Legendary Mapmaker's Glasses
Note: %Cartography talismans do not affect Cartography skill, only the %chance to successfully craft maps. Crafting talismans have no effect when digging treasure.
The glasses can have Powder of Fortification applied to increase their durability. Since the glasses are Exceptional they can also be Imbued. One of the most common properties Imbued is Luck, to get that extra little bonus towards better loot.